I'm more or less focused on the temperature crash. Even if it doesn't rain the evaporative cooling from rain in the vicinity will cool things off quickly and substantially.
The warm dry offshore flow was able to make it to the today. Hoquiam was able to get to 68 like SEA. Down here Astoria and Tillamook made it up to 72. PDX got to 71 for a +8 high departure but well off the record pace of 89 set back 8 years ago. Another beautiful day across the region.